At the same time, I understand the Uniswap dev team for keeping everything about v3 under wraps.
Giving advance info to copycats/competition would hurt Uniswap at the moment.
Let them be stunned when v3 gets out 
I think it’s now safe to assume big delegates have been told to put incentivization on hold. Otherwise, they would reply. I’ve pinged them many times on Discord and here, and they keep quiet.
In the meantime, we are losing liquidity, but volume doesn’t follow that much.
Sushiswap has to use subsidies all the time, pretty much on every pair since they have the fee switch turned on (LPs get less by default).
Uniswap is still the default DEX for most new coins.
Recent example : The Graph / GRT. I think there’s literally 0$ liquidity on Sushi at the moment.