Exclusive Intel is preparing to launch a 2.33GHz Core Duo chip, the T2700, The Register has learned. The chip giant's product pipeline also includes faster Core Solo chips, speedier low-voltage Core Duos and the introduction of an ultra-low voltage Core Duo, the 1.06GHz U2500.

Intel's roadmap also calls for the introduction of Celeron M 4xx chips - single-core value parts derived from the 65nm Core Solo.

According to recent internal retail-oriented documentation seen by The Register, the T2700 should be Intel's next Core Duo release, though the document doesn't provide a release date. The release time-frame for the 1.8GHz T1400 is likewise unclear, but with Intel's next-generation mobile core, 'Merom', due in Q3, these parts are likely to come sooner rather than later, probably in Q1.

Ditto the low-voltage Core Duo L2500 - also clocked to 1.83GHz - and the ultra-low voltage U2500, set to ship at 1.06GHz running over a 533MHz frontside bus, down from the regular Core Duo FSB clock speed, 667MHz.

Single-core ultra-low voltage parts are on the way too: the Core Solo U1300 and U1400, running at 1.06GHz and 1.2GHz, respectively. Again, the FSB is clocked to 533MHz.

The Core Solo will form the basis for the next generation of Celeron M chips, which are expected to retain the old-style branding. The Celeron M 410, 420 and 430 are all 65nm parts and clocked to 1.46GHz, 1.60GHz and 1.73GHz, respectively. There's also a Low-Voltage 65nm Celeron M, the 423, in the works. It's clocked at 1.06GHz. All four chips use a 533MHz FSB.

A Celeron M 390 - a 1.7GHz 'Dothan'-core part - is also on the cards for a Q1 appearance. ®