Operation Monsun question

First of all this is the best mod for SH4 for me, hands down and no questions asked.

Now that's out of the way, do sub upgrades work? I started in the first flotilla with the IIB (for fun) but despite having done pretty damn well in several patrols (especially since I only get 5 torpedoes and no deck gun) I haven't got anything. No equipment upgrades and most of all no sub change. All they gave me was a bigger machinegun which doesn't get used much anyways.

Also is the thing still being developed? It should be. It's the best mod after all and since we're never, EVER getting a new Silent Hunter, SH4 will have to suffice quite possibly for several decades before anyone decides to make a new WW2 sub-sim with germans.