I wanted to share how I got my pebble to support hebrew and RTL (kind of) in a very usable way with almost no compromises.
I have been using this solution for over a month now and can say that for the most part it's amazing. The only downfall is that longer more complex messages sometimes gets sentences mixed up (due to the fact that I am only faking RTL) but even then it's completely readable.
(note - all these steps require the 2.0 version of app/FW)
Step #1 - PebbleBits
This project is allows you to build a costume FW for your pebble with support for language specific fonts (among other amazing features). Simply go through the steps in this site:
I have worked with the developer to improve the hebrew fonts a bit but really he did an amazing job on his first try (which is pretty amazing considering he doesn't know hebrew ).
Step #2 - Notification Center for Pebble
This amazing app is already extremely popular so it doesn't need any introduction. With the help of the developer of the app (which was awesomely supportive an helpful). You can now install it directly from the play store.
Step #3 - Pebble Dialer
Another great app from the same developer. You can simply download the app from the play store, but you will also need to download the beta version of the watch app from here.
About RTL support
I mentioned a few times this is just fake RTL. The reason is that real RTL can only be done on the device OS level. There are a lot of things that only the OS can do properly, such as knowing font size and deciding when to do line breaks. Because of this, I have had to make some decisions (such as assuming largest font size and minimal chars per line) to make line break work adequately, and on long strings with mixed directionality it sometimes make less sense than I would of liked. However, it is good enough for me, so I don't plan on adding more fixes to the algorithm.
I want to take another chance to point out how awesome these developers are. They were extremely helpful and communicative, and very patient to my all around confusion on the subject.
Please consider supporting the apps with the means available from the developers (I know PebbleBits allows donations)