It will be too early to say that this is a start of bull rally of altcoins as we know after a huge down trend the market just has picked an up trend from the last few days so this fresh up trend of market needs to be mature if the market could able to keep its current momentum till next few days then we may expect bull rally of some quality altcoins.
What is more worth mentioning is the improvement of the market which is getting better even though it looks like a Bull, but for me personally it is not yet worthy to be called a Bull because the market still has the potential to go down even though at the moment there is more improvement happening in the market.