As the Windows 10 release gets closer, excitement around the OS is growing among those waiting to close the curtain on Windows 8.

Lenovo, the world's largest PC maker, sees more customers wanting to upgrade to Windows 10, and is bullish about the OS, said Peter Hortensius, chief technology officer at Lenovo, during an interview at International CES in Las Vegas.

"I think customers are anxious to breathe some life into that product," Hortensius said. "We're obviously very bullish and hopeful on Windows 10."

Windows 10 will succeed the current Windows 8.1 operating system, which has been criticized for its radically different touch-based tablet user interface. Windows 10 will resolve many problems affecting Windows 8.1, which is a good OS but has its issues, Hortensius said.

For example, Windows 10 will boot straight to the desktop, something Windows 8 can't do. That's a common-sense approach that is bringing customer confidence back in the OS.

"The travails of Windows 8 are well documented," Hortensius said. "But it's still not an integrated experience."

The UI change, multiple OS editions, and program compatibility issues didn't go down well with many, and enterprise customers preferred to skip Windows 8 and are still upgrading PCs with the older Windows 7. Windows 10 brings back many familiar Windows 7 features, which Microsoft hopes will please OS loyalists.

The new OS removes program incompatibility issues plaguing Windows Phone and Windows 8 versions for Intel and ARM processors.

PC Magazine