In the pipeline:
In the process of being planned or developed.
如果一件事情是 “in the pipeline”，意思就是 “正在筹划中，可能很快就会发生”。
例句
The travel agency has several new routes in the pipeline which they hope to launch before the summer holidays.
这家旅行社正在筹备几条新的旅游线路，希望能在暑假前开通。
The company says there are a number of changes in the pipeline to improve efficiency.
这家公司表示，为了提高效率，正在计划实施数项改革措施。
Fans of the singer are excited to hear he’s got a new album in the pipeline.
这名歌手的歌迷听到他正筹备推出新专辑，都很兴奋。
