Anyway I guess I will just put out the what cons there is out there currently here. Most of these cons showed up from meet up groups around the country and they wanted to make it bigger.
Gonna try to do these in order of when these are happening.
Bronycon June 30th-July 1st
http://www.bronycon.org/ there is the site. It takes place in New Jersey.
This year they have a few guests currently. Lauren Faust, John De Lancie, Amy Keating Rogers and Lee Tockar right now.
Lauren Faust is the creator of the show and the reboot. Hasbro went to her. John De Lancie is Discord on the show and is doing a documentory on the Bronies which by the way reached the goal of 60,000 in 3 days. Amy Keating Rogers is one of the writers for the show.Few episodes she wrote are The Dog and Pony Show,The Best Night Ever,The Cutie Pox,The Last Round up and A friend in Deed. Finally Lee Tockar the voice of Snips and Steven Magnet is going to be there as well.
Trotcon in Columbus,Ohio at July 21st-22nd 2012.
http://trotcon.com/ that is their site. Few of the guest they are having are mainly from the brony community. Pixilkitties. She mainly does comics. Johnjoseco will be there too. He is an artist. He is probably one of the more famous digital artists in the fanbase because of the speed and quality of his work he puts out after each episode. FoalPapers will be there he was suppose to do his presentation at Bronycon last January but some technical issues came up so he had to put his presentation up on youtube later. He basically talk about the mythology of the show and such and references in it. Also the people from PonyCraft aka Minecraft and MLP will be there.
Equestriacon in Austin Texas on August 4th 2012.
http://equestriacon.com/There is their site.
They seems to be going after the musicans at this con which is pretty cool and they have the creator of the Balloon Party Album Circuitfry. Which is basically pretty much every major Brony musican coming together on something that rocks and is very heavy.
Galacon in Struttgart, Germany on August 11th and 12th.
http://www.galacon.eu/ Some of the guests are Mr. Poniator. He typically takes an episode and makes it some change to it in an humorous way. You may have seen his video featured in the Top ten videos of that I have been posting here. KeeponRockin'Brony is an musician and he is pretty good at it. They are also going to have someone there called Swebow who is the head of Legend of Equestria MMORPG.
Next up is the othe major one other then Bronycon and that is Everfree Northwest. It takes place in Seattle Washington on August 17th-19th.
http://everfreenw.com/Lee Tockar and Cathy Weseluck are going to be there from the show. For community guests.Everfree Radio,AcousticBrony,Sethesito and Equestria Daily,Derpyhoovesnews,Bronyville Podcast,Mic The Microphone, and Equestrian Dreamers.
Basically radio station and interviewers an reviewers, Musicians, News site runner and some for the next one. Podcast and news gather. Rapper and musician and probably the most famous Rapper. A fansite for the game My Little Pony:FIM and Ace Attorney investigations:Miles Edgeworth.
September brings the Brony Fan fair in Austin Texas. September 8th and 9th.
http://bronyfanfair.com/ Midwestria is happening on September 14th-16th in St.Charles Illinois.
http://www.midwestria.org/index.htmlPON-3Con in Nebraska on September 22nd.
http://pon3con.webs.com/There is their site and their current guests are Baldumborat the fan voice of Derpy Hooves and the second guest is Max Gilardi who does the .Mov animated movies.
Finally on September 28th-30th in Strongsville, Ohio there is Canterlot Gardens.
The main guest here is going to be Mane 6 the team behind Fighting is Magic. As far as I know they are going to be here only at this Con. Last I heard they were getting voice actors for Fluttershy so I am going to guess that Fluttershy is going to be shown off at this con maybe more fully.
There is one more Con and that is EquestriaLA and I think that is November 3rd 2012. Tara Strong and Andrea Libman are going to be there so far.
http://www.equestriala.com/ These will be shorter from now on. EQD does these weekly with updates on Friday.
All that was basically from January till now as far as updates go.