Yes, it's funny how APPEND FROM offers types XLS, XL5 and XL8, EXPORT and COPY TO only XLS and XL5. Maybe an indicator that they didn't thought it was necessary to create newer excle files. as Excel 8.0 (That's Excel 97 for PCs) was capable of reading in older format files anyway.
I always saw it as a sign of losing interest of Office integration that VFP7,8,9 weren't upgraded in that respect. I can imagine the first input and output routines didn't even come from Microsoft themselves and so they never picked up on it, really.
The OLE automation part is still capable to automate even the latest Office versions, as long as they are installed as the Desktop versions of the office applications. And that has nice options with arrays, you can easily "paste" an array to an Excel range or simply set array = OleExcelRange.Value. With restrictions on data types as VFP/OLE/Excel aren't compatible in that respect..
Chriss