Spring Cloud Sleuth is supported <2.7.0-M1 and Micrometer Tracing has been recently added to Spring 3.x but does not appear to be incorporated for 2.7.x which leaves a gap in support for a spring integrated tracing solution in this release.
Comment From: snicoll
@dmlogs I can only assume you refer to the range on start.spring.io. That's a bug, see https://github.com/spring-io/start.spring.io/issues/896.