So the main update today is working on the speed increase between "turns" and the checking of blocks in order to remove them. This will be the major hurdle before adjusting and adding further levels, and is one of the main obstacles in the games development.
The real issue is the feel of movement, i.e. how responsive your key input is in regards to pushing blocks each turn. The block push needs to happen with very little delay between turns. One major thing that causes a delay is the checking of block "Combos", or when 2 or more blocks of the same colour touch each other at the end of a turn.
Below is a gif from the most recent build showing the speed increase compared to the first trailer. There are still some bugs to iron out, but it's getting much closer to how I want it to feel before continuing.
Once the movement is done, expect more frequent updates.