I've been looking over the "Endowed from on High" manual and I can't find anything that is incorrect due to recent changes. Perhaps you could enlighten me?
As for the "Preparing to Enter the Holy Temple" booklet, the only thing that I found that contradicts current practice is the bit about family members being unable to attend the temple to see the temple wedding. It was formerly the case that couples were encouraged to be married in the temple itself, and if they had a civil marriage instead they had to wait a year to be sealed. That policy no longer applies, so, yes it is inaccurate.
But I would like to point out that in many countries, it never reflected reality. In the UK, for instance, lawful weddings must occur in public to be valid. And must be overseen by a government official (a registrar), who sees to it that the bride and groom sign a register before the marriage is official. In Germany all marriages are solemnized at a government office. After that, the couple would go to the temple to be sealed. So, non-member parents would be perfectly capable of seeing their child married, and thus that entire section devoted to helping non-member relatives deal with their exclusion from the wedding never applied. But the pamphlet never indicated any exceptions, possibly because most members lived in the US, which is no longer the case. And is the likely reason the policy changed.
They will fix this eventually. It doesn't seem to be very urgent.
