Our tournaments will continue to use CS:GO until it is reasonable to move to the rumored Counter-Strike 2

ESL Representative

Dot Esports journalists also contacted BLAST, but the company replied that they have nothing to say/add on this topic. 

READ MORE: Counter-Strike 2 May Turn Out to Be a Simple Update Of CS:GO

Most likely, if Counter-Strike on Source 2 does not bring many changes and bugs, the transition to it may be quick - within a month or two. Large tournament operators switch to a new, more or less significant update, for example, with a new map, in about such terms. 

However, if Counter-Strike is almost a fundamentally new game, the migration of esports from CS:GO may continue for a whole year, as it was with the release of the current version of the game in 2012. The first major then took 15 months. 

According to rumors, the beta test of Counter-Strike 2 may start this month.

Source: Dot Esports