ReefMaster v1.6 has been out a few weeks now, with a host of updates including vector mapping and (near) WYSIWYG map editing for Navico devices (Lowrance and Simrad - sorry HB users
).
Still, there is plenty new for Humminbird users also, so please take a look at the full release details
here.
We've also put up a video showing how simple the mapping process can be which can be viewed
here (or with multi-lingual subtitles
here).
Sidescan mosaic is coming in the next major release, scheduled for mid-2014.
Matt