During a recent livestream, IOHK CEO Charles Hoskinson announced that the date of the Alonzo hard fork combinator event will be announced in mid-August:
Based on the information Hoskinson currently has, Cardano is set to active smart contracts in late August and early September.
Starting from next week, IOHK will start bringing in exchanges partners, moving to the “Purple” stage of the multi-phase Alonzo upgrade, Hoskinson says:
We are going to know this date definitively based on the feedback we get from the exchanges, EMURGO, and the rest of the partners that have to integrate.