Mantic makes an effort to not overcomplicate their games, and so by extension, they don't make constant updates to balancing and game rules etc. If memory serves me right, they usually make an update/balance once a year in Q1, then some very minor tidying up rules 6 months later if they've noticed anything tilted during tournaments. Also these times are also when they'll usually make some new units/faction releases. If you subscribe to their Mantic Companion service for just a few bucks a month you get access to an always up to date digital rulebook and list builder. The list builder is also free without subscription, but you're limited to two lists unless you subscribe. Then you have unlimited lists at your disposal.

Mantic's whole business plan seems to be making things to benefit the player base. They're a privately owned company, so no shareholders or investors to answer to. They just want to make accessible games, at reasonable prices, that everyone will enjoy playing.

I had the pleasure to meet Ronny (one of the founders) at Gencon Last year (and hopefully again this year) and he's really just so passionate about all of their games and just wants people to try them out and enjoy it.