Google is set to update its cryptocurrency advertising policy, allowing ads for "Cryptocurrency Coin Trusts," which enable investors to trade shares in trusts holding large pools of cryptocurrencies. Speculation is rife that this update could encompass recently launched US Bitcoin spot ETFs, as the language used in the policy revision has sparked such discussions on social media. Google's previous crypto advertising ban in 2018 gradually opened up to wallets and exchange providers in 2021, and this latest development reflects the evolving landscape of cryptocurrencies and investment products. Google has not yet provided an official comment on these speculations.