I don't think so. There's no rule saying that there will be this so called alt season.
All of this is based on the fact that when bitcoin went up by a lot, people would be in such euphoria that they would sell some of it to invest in other projects and spread the capital, but historically this was the wrong move. It was good if you managed to catch altcoins at the right moment and buy it when bitcoin was peaking and then sell a week or two later, before we enter a bear market. If you stayed in altcoins you did much worse than you would holding bitcoin and people learned on their mistakes. Some lost so much money they turned away from altcoins completely and in coming bull markets never chose to sell bitcoin for altcoins. Why should they do it now? How will they know it's the end of the bull run for bitcoin?