The next progression in BIS-land is 4.0 and it looks like we have some good updates to look forward to. N4BB snagged a doc that shows off the upcoming features of the latest BIS. As usual it's not a ton of little upgrades, but rather a few mid-sized ones. Updates look to include:
No official date for release just yet but it doesn't seem like it would be too far off. Typically the rollout seems to happen over a few weeks to various carriers and we get no real word of a launch. Overall some pretty good stuff in this update. Hit the source link for more info.