As some of you may have already noticed, a Sneaky Peek of OmniFocus 1.10 is now available.
Please remember: Sneaky Peeks are not as fully tested as our released software. Make sure you have good backups and don't start using one right before that really important deadline.
Right now this feature is Mac-only, so some task due dates could get confused if you use this feature and sync to an iOS device. More details below.
If you understand this might eat your data, and still want it, the download is here:
I understand the risk.
Okay, now that we're past that disclaimer… what's the new shiny?
Repeat every weekday.
Or repeat every weekend day.
Or every Tuesday and Thursday.
Or …?
If you set up a "repeat every" action and choose a week-based interval, you can now pick which days of the week it should happen on.

We want to add more repeat options in a later release. Rather than wait until we could do ALL of them, though, we realized that we could do this one and it would help a lot of people out right now.
We will be updating the iPad and iPhone editions to understand this repeat schedule soon. In the meantime, it should be safe to use all your devices for viewing any actions. It should also be fine to edit projects and actions that do not have one of these weekday repeats on any device. However, if you edit or complete an action with a weekday repeat action on a device that hasn't been updated, it will probably forget what weekdays you picked. If this sort of misbehavior would ruin your weekend, please don't start using this feature until we get our iOS updates released.
This Sneaky Peek is not intended to address any real, imaginary, or NDA'ed compatibility issues with Mountain Lion.