Volker meant lyrics from MIDI files as displayed e.g. in Band in a Box.”
I get it. I have Band-In-A-Box and am also a beta tester. I can save BIAB files with lyrics under the Save As Special menu and they will display lyrics when opened in BIAB or RealBand only. They will not display lyrics when opened in Overture, Finale, Dorico or Notion so I wouldn’t get my hopes up.
Back to my previous answer: MusicXML 3.0 Import/Export supports Lyrics, Text and Expressions. I’m expecting to see it in Encore 6. It’s already there in BIAB.