Well... later is better than never. Opting into beta is a good trade-off between unstable releases and very slow over-polished early access updates. I just hope that you'll continue this practice in the future, i.e. put new features and content into the beta as soon as they become playable, not waiting another 4 months till the next release.
Tbh I didn't expected from Tripwire to release new update, even as beta, before PAX Prime. This gives you +1 karma from me

Consider early press release has been forgiven
I also like your new shareable DLC practice, when one player owning the content unlocks it for every player on the server.
"Cosmetic-only content for owners while gameplay-affecting items for everybody on the server" is a fair trade-off between raising additional funds for the company and "pay2win" strategy. Until it is balanced, of course.