TF2 has been running a semi-public beta with the plan of making a patch that will make competitive play better. This is cool. I've heard that they're allowing heavies to run faster when holding their hands out, but that may be an urban legend.
Naturally, the TF2 Blog is completely silent on this matter, instead telling us three bits of information that are niche at best. (A segment that will interest noob machinima makers, a segment that interests map makers, and a link to advice for getting into the pro side of TF2.) I wonder who is in charge of their PR. Like I said earlier, I would be glad to take the job.