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JoelF847 wrote:

5) Why do you need to replace spells as you level up "lets you get rid of some spells that were great options when they were at your highest level but maybe aren't worth casting anymore"? I thought PF2 spells all had built in heightening which makes them useful at all levels now.

6) I'm 100% confused by spontaneous heightening. Doesn't spontaneous casting already let you do this? I thought when you learned a spell you learned all versions of it already and could prepare it at any heightened level, so for a spontaneous caster you can do this already without it being a separate class ability.

Only cantrips and spell point powers are autoheightened slot spells have to be prepared or known in a top slot to benefit from heightening. This has been clear since the beginning.

Except they said the exact opposite of that in the All About spells blog

In the playtest, you'll be able to heighten your favorite spells in order to gain greater effects than ever before. Heightening a spell works much like it did previously, where you prepare a spell in a higher-level slot (or cast it using a higher-level slot if you're a spontaneous caster), except now all spellcasters can do it, and you gain much more interesting benefits. Want to fire 15 missiles with magic missile or turn into a Huge animal with animal form? Just heighten those spells to the appropriate level! There's no longer any need to learn long chains of spells that are incrementally different and each require you to refer back to the previous spell.

specifically says you don't need to learn the spell at higher levels, and its just something available to everyone including spontaneous casters!

Really hope they end up with the much simpler heighten only cares about the spell level of the slot used and not having to keep track of some list of spell levels I'm allowed to heighten individual spells to. (Works for 5e)