The Ethereum network rewards 5 Ether for each block - average 1 block every 14 seconds.

The plan is to switch to PoS sometime next year and at that time the current reward schedule will obviously not apply, but we do not have the details yet on how the new system will work. Based on developer comments, there will likely be an annual inflation amount of 2-5% after PoS goes into affect.

Bitcoin maximalists view this as "unlimited" supply because it does not have a stopping point. Technically that is true, but practically speaking, a 2% inflation rate is not going to have much of an impact on a growing network. Fundamentally speaking, this underlies the difference between Bitcoin and Ethereum. Bitcoin is built from the ground up to be a store of value where the coins continually gain in price. Ethereum is built to be a developer platform where the coins are used to buy execution time to run contracts. There are good and bad things about both systems.