The trademark bot has come up with the goods again! Toei has filed an application for a trademark on the term 'Kamen Rider Saber.'
According to people on twitter who know more than me about Japanese (i.e. anything) Toei are using the kanji for "holy" and "blade" to make the word 'Saber'.
Don't get too excited just yet, it's usually at least another month before we get any more details. Between COVID-19 and Bandai generally tightening up on leaks, it could be even longer than usual.