That is literally just the past week; there's not really anything for future stuff (there is so much future stuff that keeping track of it all would almost be more work than just going out and implementing it ;) ) other than skimming the mailing list, the weekly meetings and sometimes the devs blogs (which normally get posted to the mailing list and /r/rust on reddit); although the significant discussions do get linked in TWiR, so I guess I kinda lied.