As we know, spelling and pronunciation change over time. However, it's hard to imagine any normal, common words having a shift in their spelling in our lifetimes.
The issue was brought to mind for me by the word "have," which it occurred to me is always pronounced with a v sound when used in reference to possessing something, e.g. "I have a car," but often pronounced with an f when in reference to obligation, e.g. "I have to go." (I haffta go.) And that's not even really "casual" pronunciation. When I pronounce it out fully with a v in that context, to my ear it actually almost sounds wrong.
When, if ever, would spelling start to reflect this? Can language still change that way now that the written language is so widely standardized and distributed? By this I mean that we're all largely reading the same things now via the internet and digital distribution of media, which reduces the effect of regional deviations in language.
Are there any examples of ongoing shifts in spelling despite the modern way of things?