The issue is not not reached a point yet where there is a proposed legislation.
The problem with liquid screening is highlighted in the Commission's latest civil aviation security report, published about a year ago:
At the end of November 2014, the Commission received the results of an additional study assessing a possible second phase for lifting of the liquid restrictions. This study was carried out by the consultant ICF International. It assessed the possibility of permitting passengers to carry bottled water through a series of airport trials and also checked the findings of the previous study, in relation to the operational impact of the first phase. Also, this study concluded that the first phase had no negative operational impact on EU airports, even during the summer peak of operations at the EU airports involved in this study. It however also concluded that there may be a significant impact on throughput and cost for EU airports should the restrictions be further lifted to permit passengers to also carry bottled water. This is mainly due to the expected high number of bottles that would need to be screened and which would require significantly more liquids screening equipment. The outcome of this study led the Commission, in concertation with Member States, stakeholders and its international partners, to postpone the introduction of the second phase of lifting the liquid restrictions.
That being said, the issue is still being worked on. Trials are conducted at various airports to test the process. These are usually not publicly announced, with the exception of this Malta Airport press release where trials were conducted in the last two months:
Through this project Malta International Airport is contributing towards enhancing the passenger experience for travellers within the EU. The key participant airports for this project are Amsterdam Schiphol Airport, Budapest International Airport, Alicante International Airport, Dublin International Airport, and Malta International Airport.
The airport team has already conducted some initial trials, to establish the ideal testing environment. With the technology and equipment now available for LAGs to be screened, MIA’s security team will be determining best practices for this new screening procedure whilst maintaining the requirements of the current EU legislation. The results from the participant airports will be analysed by the European Commission, with a view to implement new guidelines on LAGs.
When this exercise is taking place, passengers who may, in special circumstances, be carrying LAGs of more than 100ml will be subjected to further screening.
O&I Consulting, the company which conducts these trials for the European Commission, currently carries out an online survey on that issue.
