Well actually the regular BOSS is going to be update to version 2.2 and it has his masterlist updated while BOSS 2.1.1 is frozen.
It's still not entirely clear how much attention the BOSS masterlist will receive after v2.2 is released, since LOOT (previously known as BOSS v3) is meant to replace BOSS. With every passing week, new mods are released, patches, made, etc., all of which would need to be added to the "old" masterlist for v2.2 to provide the same usefulness as it had until the masterlist was frozen in January.
Personally, I'm not ready for LOOT, and worry about things like how it will handle plugins with masters in a different orders (since that's what it looks at when determining load order.) Maybe that's already been figured out, but I'm not interested in combing through the development forum thread, and will just wait until it's out of beta and has seen use by the "public" for a month or so.
In the meanwhile, it's probably important to note that if you're trying out the BOSS v2.2 update beta, BOSS Userlist Manager (BUM) [color=#40e0d0;]needed to be updated to work with it[/color]. The latest version of [color=#40e0d0;]BUM[/color] is now 6.7.
Anyhow, looking at the tail end of the LOOT / Boss 2.2 development thread, I see that wrinklynija has announced his plan to release BOSS v2.2 tomorrow (Saturday, which is actually today here in Hanoi). He's likely going to remove the Nexus mods page for BOSS. since it has it's own [color=#40e0d0;]webpage[/color].
An important thing he also stated is that BOSS v2.2 will be required to receive any masterlist udpates - though again, it's unclear how well it be maintained moving forward (since it requires so much "manual" work to keep it updated.)