As a long time user of Sibelius, I was dismayed at Avid’s firing of the design team in August of last year. Since then, the team was hired by Steinberg to create a brand-new notation editor.
Product Marketing Manager Daniel Spreadbury has a blog detailing the development. He recently posted an early version of a new notation font, Bravura, and it looks great. Even more promising is that it’s licensed under a SIL Open Font License.