Hewlett-Packard seems pretty serious on giving its competitors a tough run and has just pulled the veil off four new all-in-one Windows 8-based systems, all extreme pieces of eye-candy. To be launched in October, the new line-up includes the HP Spectre ONE, the thinnest AiO and the first to join the Spectre line. Sporting a 23-inch display and measuring just 11.5 milimeters, this one comes with 6GB of RAM, 750GB or 1TB of internal storage, Beats Audio, an HP TrueVision webcam and the Connected Remote feature and will be priced at $1,299 onwards. And that’s not all. HP has also unveiled two touch-enabled AiO including the ENVY 20 TouchSmart and the ENVY 23 TouchSmart each with 10-point multi-touch, priced at $849 and $1,099 respectively. To top it all, HP has also introduced the entry-level HP Pavilion 20 lacking touch support though packing Intel and AMD processor options, HP Connected Remote and up to 2TB of storage with Connected Remote technology, priced at just $499 onwards!