Battery vs Hackery!

The battery problems fixed in apple’s latest iOS update (5.0.1) are a very strong temptation. However, I fear it may delay my inevitable jailbreak. I also imagine that this example of a delta update might even aid the dev team and others working to free our phones of tyranny. Ideally I would like to see a jailbreak able to download and patch the update before installing. Thus maintaining the jailbreak through the update. am I dreaming?