Anyone heard of this before?

Yeah, tried playing with it. Requires you to register to get a license, including supplying address info. I gave up after that.

I saw it in an advertisement yesterday. Looked pretty interesting.

From the same link above:

In a recent post from TinyCP team, it was made known that TinyCP will remain free until the beginning of 2019. After that, in order to keep the project alive, small fees will be charged on per IP bases. Per the information in that post, the prices will be $1 Montly and $10 Annually .

It could be a good thing as it can promote better development for the project, considering that the price is really minimal.