Scouring the steamforums for useful information is hard work, with so many inexperienced internet users congregating to a games official forum, but useful information does arrive!
The first tidbit of info comes from an email directly responding to a member of that community from Robin Walker, talking about how the Huntsman is currently visually bugged: the model from 1st person and 3rd person dont correlate. Robin says the team is working on allowing ALL weapons to be held from EITHER side of the screen, including the Hunstman. What we know for all current projectile weapons is that they release from the weapon model, rather than the centre of the screen, allowing players to shoot round left turns more easily than right turns. This new change could allow players to choose either way, and nullify any map imbalances.
It also would seem from tf2maps.net interview with the creater of plr_pipeline that an update is headed to that map to fix a few things. You can read the full interview here.
Most recently it would also appear that players are receiving random item drops with varying levels. Examples here and here. This update wouldnt require anyone to update their game, because it can all be done from Valves side.
It will still likely be another month, and likely more, for a full blown class update, but these smaller ideas could be implemented separately before that.
Edit: another thread was created by a member of Valve, asking community members to attempt to explain how you recreate two issues, the first being the third spy hand, and also hunstman arrows that are stuck in midair. The thread concluded with the Valve employee saying they had discovered how to recreate the bugs, and so fixing them would become easier.