Acer Aspire Timeline 1810T will don Aspire One 751's case and LCD screen but will ship with an Intel ULV processor and other specs typical to Timeline series:
Intel ULV SU3500 1.4GHz processor, which is at least twice as fast as any current Intel Atom processor. Or the Intel GS45 Express Chipset, with integrated Intel GMA 4500MHD graphics core and hardware accelerated decoding of HD video. Unlike other chipsets commonly used in netbooks it supports up to 4GB of RAM.
Other features and components: HDMI, S/PDIF, Gigabit LAN, Intel 802.11a/b/g/n WLAN, optional 3G and optional Bluetooth 2.1+EDR support. Not to forget 8h battery life. Windows Vista Home Premium is pre-installed, with the option for a free upgrade to Windows 7 once it's released in October.
Just how much it would cost after the innard-update remains to be seen.