Samsung Foundry and ARM have announced a partnership to build chipsets based on the Cortex-A76 core at a 7nm LPP process and later moving to 5nm LPE. These chips will have CPU clock speeds beyond 3 GHz. The initial production run for the 7nm chips is slated for the second half of 2018. Meanwhile, development of the first Extreme Ultra Violet (EUV) lithography process is under way and should be done by the first half of 2019. This will enable 5nm chips that will be smaller and more power efficient than their 7nm counterparts. ARM claimed that an A76 core at 3.0GHz (7nm) will be 35%...
Source: https://www.gsmarena.com/samsung_and_arm_partner_up_for_7nm_cortexa76_processors_running_at_3_ghz-news-32079.php