Glad you're making the effort, it just didn't seem like it since you seemed unaware of anything since the 4.0/4.0.1 jailbreakme.com jailbreak.
As far as the limera1n controversy goes:
Basically, The Chronic Dev Team set a release for their 4.1 jailbreak "greenp0ison" for today (10/10/10) at 10am GMT, shortly after they announced this, geohot claimed that he was going to release his limera1n jailbreak (which uses a different exploit). This would "burn" 2 different exploits (by bringing them to Apple's attention). Now geohot (author of the limera1n exploit) has a bit of a reputation for being both egotistical and releasing buggy jailbreaks. The Chronic Dev Team has said that they will retool greenp0ison to use the same exploit as limera1n to avoid burning an extra exploit.
There's a few tricky spots in all of this though:
1. greenp0ison will only jb devices with an A4 processor (iPad, iPhone 4, iPod touch 4th gen, Apple TV 2)
2. No one is certain of exactly WHEN if ever that geohot knew this and decided to wait and upstage instead of playing ball and sharing his exploit with the CDT.
3. As of now, no Mac version of limera1n exists. It's possible to use bootcamp or a Windows PC to run limera1n, but it's left a few Mac users a bit unhappy (myself included)
Personally, I think I may wait a bit longer and see if greenp0ison comes out with the new exploit any time soon. You're free to use limera1n (as your need seems to be more urgent), but be warned that there are a few (relatively minor) known bugs being worked out, and geohot has a reputation for releasing some buggy stuff in the past (blackra1n).
I think that pretty much summarizes the whole goings on.