Monthly actually, but you're always welcome to reach out to me at any time 

Speaking of which, here's my update for the month of December: https://litecointalk.io/t/mimblewimble-progress-update-thread/26678/8

The TL;DR is:

* The design has been published at https://litecointalk.io/t/mimblewimble-design-libmw/26915 (feedback welcome)

* The code is being written https://github.com/GrinPlusPlus/libmw-core and https://github.com/GrinPlusPlus/libmw-ltc

* Next month I will setup a build system, design a new fast-sync mechanism, and work on the database code

Thanks everyone for your continued support!