I wasn't aware that the announcement of no online battle mode is old news. It was the first I heard about it the other day.
It's still somewhat disappointing. You would think it wouldn't be too much related to lag, since the same problems would easily plague the races (ie, getting hit unfairly by items, photo-finish races going to the wrong player, etc). I do understand the development time constraint, though. It's a shame online battle is the thing that has to go. It was the best way to play multiplayer in MK64, and MK on SNES. Battle in MK: DD largely sucked, in my humble opinion.
At least LAN battles will still be super awesome.
I'm very excited they're bringing back the old item style, and the hop. I just couldn't get over no hopping in MK: DD. I might be the only one, though. They seem to be taking the right direction with this game, with the older, generally more favorable style, and 16 retro + 16 new courses. The MK team seems to understand people want compilations like this. I wish other teams (*cough*Mario Party*cough*) would release old favorite minigames in newer versions. They're not going to be making any more profit off the N64 Mario Party games. Just release them all as unlockables in Mario Party 7! I'd buy it.