Probably new trading engine and LTC.
'A few' would suggest at least both of those, hopefully.
you've brought this topic to life again, I have a feeling that LTC wont go there before the new client release (0.8.2).
What can I say? I'm a necromantic kind of guy :p Good old Google ranks your post highly for "Mt Gox announcement"
To add my view to this thread which I missed first time round anyway:
I ditched Gox during during the bad news period, kept most of my coins in cold storage and left just play money on BTCe for day trades. Now, Gox can have my business back when they can handle the volume and take a look at their commision fee. LTC would be a bonus and it has a stabilising effect on BTC, just look at BTCe: LTC and FTC along with a 0.2% fee act as counterweights stopping BTC from doing some of the crazy things it does on Gox.
I'm not happy with BTCe though, I really do not trust it 100% though perversely it is much more robust than Gox. The whole trollbox thing, though blockable lends the site an air of immaturity, not so much an exchange as a god-damn rowdy schoolroom.
Clearly, if and when LTC floats on Gox, the long-term effect will be that it will be seen as a legitimate altcoin, presented to a much wider audience (Wired UK's Litecoin article yesterday already seemed to bump the price a little). The price may and probably will do some crazy things in the first day or so but will soon act as a nice hedge against BTC's wilder excesses without needing to cash back out to fiat every time there's a BTC plunge.
I like LTC, it clearly has its advantages over BTC especially in a retail context. The price seems to have bottomed out recently and is looking like a great buy especially with BTC being so flat as ASIC miner dumping continues.
So, hopefully the next announcement will be more than announcing an announcement!