Xiaomi, Apple ’s ( AAPL ) rival in China, might make a splash at Alphabet ’s ( GOOGL ) Google I/O developer conference, which runs Wednesday through Friday. Xiaomi was the top smartphone seller in China in Q4, followed closely by China’s Huawei, with Apple down at No. 3. Hugo Barra, vice president for global at Xiaomi, joined the company in 2013 after leaving Google, where he had worked on mobile products and the Android mobile operating system. Google is expected to disclose more details for Android N, the next major update of the mobile OS, due for release this year. On Twitter, Barra teased that he’s “thrilled to share that Xiaomi will be a part of Google I/O.” There’s also growing speculation Google might provide some details on “Project Chirp,” its answer to Amazon.com ’s ( AMZN ) Echo home electronics hub. Smart-thermostat maker Nest Labs, acquired by Google in 2014, seems to be struggling, and Google’s “Other Bets” are not expected to have a big profile at the developer conference. Any new products and technologies coming to Google I/O will likely be unveiled by Google CEO Sundar Pichai in his keynote address , scheduled for 10 a.m. PT Wednesday. In a recent letter to Google shareholders, Pichai touted plans for artificial intelligence. While Apple and Google have dominated in the world of mobile apps, there could be more competition down the road. Facebook ( FB ) recently introduced “chatbots,” while Microsoft ( MSFT ) launched its “Bot Framework” software tools for developers. Both rely on AI. Some observers expect chat bots to be a topic in Pichai’s keynote. Alphabet stock was down a fraction in afternoon trading in the stock market today . Shares broke out of a cup-with-handle base on April 16 at a 777.41 buy point, but Alphabet’s Q1 earnings report on April 21 disappointed, sending shares falling more than 5%.