If you don't go beyond 5766 (maybe 5787, but not sure yet) you are still ok for homebrew (use time attack device, that will be probably be released, as well, as a daughter board for infectus, made by infectus team).
If you do the mod to swap (just infectus alone) firmware versions (between 4548 max and 5787 max), with retrieval of cpu keys by linux method, it's less painful and cheaper but requires that you do that when you are still at 4548 max.
However, the most annoying part is infectus itself (many short wires to solder). So, globally, difference is small between both methods (except you save the cost of the daughter board).
Beyond 5787 (i.e the incoming fall update), my little finger tells me people interested into homebrew will be screwed... Will need to hear from xbh hackers once they have analyzed fall update. Also, water cooling mod may be necessary, in order to protect homebrew compatible console over time.
(Many thanks, Xantium, for posting this news before fall update. That will prevent people from doing a bad, non-reversible firmware upgrade, until they decide if homebrew on 360 is interesting for them or not.)
This post has been edited by openxdkman: Oct 1 2007, 12:50 PM