Windows 11 recently gained two German extended keyboard layouts: German extended E1, and German extended E2. The difference to the regular German keyboard layout is that in the AltGr plane, they add a few characters and a whole bunch of new dead keys,[1] which should be quite useful. Here's a comparison, using the layouts given on the Microsoft website:
Keys marked in yellow are dead keys. Of these there's a lot, so you can now type å and ő (the latter is used in Hungarian) and so on without too much trouble.[2]
Undead (heh) keys there's a few new ones of, too. I'm particularly happy that you can now type a capital ẞ with just one modifier key, and the keyboard now also contains em and en dashes and a minus sign, all of which are typographically distinct from the hyphen (--−-). Soft hyphens are also there, as well as French double and single quotation marks, »« and ›‹, double and single primes ″′, upside down question and exclamation marks ¿¡, a narrow non-breaking space ( ) useful for abbreviations such as e. g.,[3] and a few mathematical multiplication symbols: the times symbol and the center dot ×·.
Of course, there's also omissions. The biggest one, IMO, is that the quotation marks used in German aren't there, which is made stranger by the fact that the French ones are there. Also, ’ (which is not used in German) is there, but the corresponding left mark ‘ isn't. I also would've liked to see an ellipsis …, and honestly could've done with the (single) emoji ☺ for the addition of which I can see no sensible reason. Well, there's still the AltGr-Shift-plane, which is still empty save for a duplicate
But anyhow! I also like the fact that the ^ dead key now works with more letters, so if you write in Esperanto you can finally type ŝ, ĉ, ĥ and ĝ directly (ŭ is also available now).
And of course, PowerToys still offers the Quick Accent toy, which I continue to highly recommend. There's also the
Neo layout, which is not built into Windows but available (I think) as a separate download. I tried learning this once, but ultimately decided it was probably not worth the effort. (I'm delighted to see that there
used to be a commercially-available Neo keyboard, however.)
- A dead key is a key that you hit but that doesn't have an immediate effect, instead modifying a subsequent key press. For instance, hitting ^ and A in succession will generate  rather than ^A if ^ is a dead key.
- The remaining trouble is that you'll have to remember where exactly the relevant dead key is located on the keyboard.
- Useful if it is actually rendered as a narrow space, that is.
EDIT, 2024-12-25: another glaring omission: you can't type an ø on this, though å is possible thanks to the ˚ dead key.