edit: oof never mind, wasn't looking close enough. Found it, bottom of the first post in the update thread.
Sorry if this isn't the best place to ask, if I should contacted customer support or something. The latest OS on the Rev2 download page is 1.1.4.5, but from the 'Update Rev2' topic here on the forum, there's 3 updates since then. Are they all still in beta, not available to the public yet? I'd really like to get a hold of 1.1.4.9 with the arp/seq sending MIDI out. That's been one of my feature requests since I got this synth and I'm super stoked they included it.