International Joint Conferences on Artificial Intelligence is a non-profit corporation founded in California, in 1969 for scientific and educational purposes, including dissemination of information on Artificial Intelligence at conferences in which cutting-edge scientific results are presented and through dissemination of materials presented at these meetings in form of Proceedings, books, video recordings, and other educational materials. IJCAI consists of two divisions{:} the Conference Division and the AI Journal Division. IJCAI conferences present premier international gatherings of AI researchers and practitioners and they were held biennially in odd-numbered years since 1969. Starting with 2016, IJCAI conferences are held annually. IJCAI-23 will be held in Macao, SAR from August 19th until August 25th, IJCAI-PRICAI-24 in Shanghai, P.R. China, IJCAI-25 in Montreal, Canada and IJCAI-ECAI-26 in Bremen, Germany. We have a paper of “FedET{:} A Communication-Efficient Federated Class-Incremental Learning Framework Based on Enhanced Transformer” was accepted.