Business as usual - no conversions.
edit --- . . . though what the future might hold, I don't know for certain. No-one in the local area, myself included, is buying the 4e books, let alone playing it or running it, so I know that is not an option at any stage. Other than that fact though, it's pretty open: Pathfinder looks good as a 3e upgrade, but we'll see; Mutants & Masterminds rocks; True20 is promising in terms of new material being produced (e.g., Interface Zero and True20 Ancients); and a number of other RPGs are a possibility, depending on who's running what type of thing. One last thing as well - A Song of Ice and Fire, the custom-system roleplaying game coming out soon from Green Ronin, is most certainly getting a playtest - it sounds amazing - and is likely to be adopted readily around here, subject to feelings post-playtest.