I've been working on a version of Plotline for the Mac. Based on my own use of the iPad version, I've included some modifications to the design that help with creating the scenes. Plotline 2 has been approved by Apple, so it will be releasing soon.
There are some looming changes behind the scenes at Apple's Mac App Store, so I'll be looking at what changes if any are required for my apps.
Hopefully Plotline 2 will be released before November.
It's a busy time of year for a lot of writers - particularly if you're gearing up to have a crack at National Novel Writing Month (NaNoWriMo). This year, it coincides for me with work on my next novel, Mind Games, so I'll be writing every day during the period anyway.
If you're taking part in NaNoWriMo this year, I wish you the best of luck.